Monday, July 21, 11:00 P.M. — 5:00 A.M. Tuesday, July 22:
- The ramp from I-90 eastbound to I-495 northbound will be closed. Traffic will be directed to follow the detour signs and use I-495 southbound to exit 54A (West Main Street, Hopkinton), to reverse direction back to I-495 northbound.
- The ramp from I-495 to I-90 westbound will be closed. Traffic will be directed to follow detour signs in place and use I-90 eastbound to exit 111 (Route 9 Framingham) to reverse direction back to I-90 westbound.
Tuesday, July 22, 11:00 P.M. — 5:00 A.M. Wednesday, July 23:
- The ramp from I-90 eastbound to I-495 northbound will be closed. Traffic will be directed to follow the detour signs and use I-495 southbound to exit 54A (West Main Street, Hopkinton), to reverse direction back to I-495 northbound.
- The ramp from I-495 to I-90 westbound will be closed. Traffic will be directed to follow detour signs in place and use I-90 eastbound to exit 111 (Route 9 Framingham) to reverse direction back to I-90 westbound.
Wednesday, July 23, 11:00 P.M. — 5:00 A.M. Thursday, July 24:
- The ramp from I-90 eastbound to I-495 northbound will be closed. Traffic will be directed to follow the detour signs and use I-495 southbound to exit 54A (West Main Street, Hopkinton), to reverse direction back to I-495 northbound.
Thursday, July 24, 11:00 P.M. — 5:00 A.M. Friday, July 25:
- The ramp from I-90 eastbound to I-495 northbound will be closed. Traffic will be directed to follow the detour signs and use I-495 southbound to exit 54A (West Main Street, Hopkinton), to reverse direction back to I-495 northbound.
Appropriate signage, law enforcement details, and messaging will be in place to guide drivers through the work area.
Drivers traveling through the affected areas should expect delays, reduce speed, and use caution.
All scheduled work is weather-dependent and may be impacted by an emergency.
Travel Tips
For information on traffic conditions, travelers are encouraged to:
- Download the Mass511 mobile app or visit www.mass511.com to view live cameras, travel times, real-time traffic conditions, and project information before setting out on the road. Users can subscribe to receive text and email alerts for traffic conditions.
- Dial 511 and select a route to hear real-time conditions.
- Follow @MassDOT on X, (formerly known as Twitter), to receive regular updates on road and traffic conditions.
About the Project
For years, the I-495/I-90 Interchange has experienced traffic demands exceeding its capacity. On an average day, this interchange carries hundreds of thousands of vehicles that travel on both I-90 and I-495, with approximately half of all trucking entering eastern Massachusetts. The deficient geometry concentrates movements through the former toll plaza area, resulting in queuing onto the interstate mainlines and crash rates twice the statewide average.
Through this project, we will improve the movement of people and goods through the area today and into the future. The project will replace the interchange, eliminate the old toll booth area and weaving areas, improve ramp spacing, acceleration, and deceleration lanes, and add an auxiliary lane from I-495 Northbound to Route 9. New bridges will be constructed on I-495 over I-90, on I-495 and I-90 over the MBTA/CSX/Amtrak lines, on I-495 Northbound over Flanders Road, and on Fruit Street.
Stay Informed
If someone you know would like to subscribe to receive project updates, meeting notices, and traffic impact advisories, they can do so here.
To report a noise complaint, please call the project hotline: (508) 676-3551
Project email: 495-90Improvements@state.ma.us
Project website: www.mass.gov/massdot/495-90interchange
